diff options
Diffstat (limited to 'faad2/src/libfaad/output.c')
| -rw-r--r-- | faad2/src/libfaad/output.c | 559 |
1 files changed, 0 insertions, 559 deletions
diff --git a/faad2/src/libfaad/output.c b/faad2/src/libfaad/output.c deleted file mode 100644 index 6e224b5..0000000 --- a/faad2/src/libfaad/output.c +++ /dev/null @@ -1,559 +0,0 @@ -/*
-** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
-** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-**
-** Any non-GPL usage of this software or parts of this software is strictly
-** forbidden.
-**
-** The "appropriate copyright message" mentioned in section 2c of the GPLv2
-** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
-**
-** Commercial non-GPL licensing of this software is possible.
-** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
-**
-** $Id: output.c,v 1.47 2009/01/26 23:51:15 menno Exp $
-**/
-
-#include "common.h"
-#include "structs.h"
-
-#include "output.h"
-
-#ifndef FIXED_POINT
-
-
-#define FLOAT_SCALE (1.0f/(1<<15))
-
-#define DM_MUL REAL_CONST(0.3203772410170407) // 1/(1+sqrt(2) + 1/sqrt(2))
-#define RSQRT2 REAL_CONST(0.7071067811865475244) // 1/sqrt(2)
-
-
-static INLINE real_t get_sample(real_t **input, uint8_t channel, uint16_t sample,
- uint8_t down_matrix, uint8_t *internal_channel)
-{
- if (!down_matrix)
- return input[internal_channel[channel]][sample];
-
- if (channel == 0)
- {
- return DM_MUL * (input[internal_channel[1]][sample] +
- input[internal_channel[0]][sample] * RSQRT2 +
- input[internal_channel[3]][sample] * RSQRT2);
- } else {
- return DM_MUL * (input[internal_channel[2]][sample] +
- input[internal_channel[0]][sample] * RSQRT2 +
- input[internal_channel[4]][sample] * RSQRT2);
- }
-}
-
-#ifndef HAS_LRINTF
-#define CLIP(sample, max, min) \
-if (sample >= 0.0f) \
-{ \
- sample += 0.5f; \
- if (sample >= max) \
- sample = max; \
-} else { \
- sample += -0.5f; \
- if (sample <= min) \
- sample = min; \
-}
-#else
-#define CLIP(sample, max, min) \
-if (sample >= 0.0f) \
-{ \
- if (sample >= max) \
- sample = max; \
-} else { \
- if (sample <= min) \
- sample = min; \
-}
-#endif
-
-#define CONV(a,b) ((a<<1)|(b&0x1))
-
-static void to_PCM_16bit(NeAACDecStruct *hDecoder, real_t **input,
- uint8_t channels, uint16_t frame_len,
- int16_t **sample_buffer)
-{
- uint8_t ch, ch1;
- uint16_t i;
-
- switch (CONV(channels,hDecoder->downMatrix))
- {
- case CONV(1,0):
- case CONV(1,1):
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = input[hDecoder->internal_channel[0]][i];
-
- CLIP(inp, 32767.0f, -32768.0f);
-
- (*sample_buffer)[i] = (int16_t)lrintf(inp);
- }
- break;
- case CONV(2,0):
- if (hDecoder->upMatrix)
- {
- ch = hDecoder->internal_channel[0];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch][i];
-
- CLIP(inp0, 32767.0f, -32768.0f);
-
- (*sample_buffer)[(i*2)+0] = (int16_t)lrintf(inp0);
- (*sample_buffer)[(i*2)+1] = (int16_t)lrintf(inp0);
- }
- } else {
- ch = hDecoder->internal_channel[0];
- ch1 = hDecoder->internal_channel[1];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch ][i];
- real_t inp1 = input[ch1][i];
-
- CLIP(inp0, 32767.0f, -32768.0f);
- CLIP(inp1, 32767.0f, -32768.0f);
-
- (*sample_buffer)[(i*2)+0] = (int16_t)lrintf(inp0);
- (*sample_buffer)[(i*2)+1] = (int16_t)lrintf(inp1);
- }
- }
- break;
- default:
- for (ch = 0; ch < channels; ch++)
- {
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->internal_channel);
-
- CLIP(inp, 32767.0f, -32768.0f);
-
- (*sample_buffer)[(i*channels)+ch] = (int16_t)lrintf(inp);
- }
- }
- break;
- }
-}
-
-static void to_PCM_24bit(NeAACDecStruct *hDecoder, real_t **input,
- uint8_t channels, uint16_t frame_len,
- int32_t **sample_buffer)
-{
- uint8_t ch, ch1;
- uint16_t i;
-
- switch (CONV(channels,hDecoder->downMatrix))
- {
- case CONV(1,0):
- case CONV(1,1):
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = input[hDecoder->internal_channel[0]][i];
-
- inp *= 256.0f;
- CLIP(inp, 8388607.0f, -8388608.0f);
-
- (*sample_buffer)[i] = (int32_t)lrintf(inp);
- }
- break;
- case CONV(2,0):
- if (hDecoder->upMatrix)
- {
- ch = hDecoder->internal_channel[0];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch][i];
-
- inp0 *= 256.0f;
- CLIP(inp0, 8388607.0f, -8388608.0f);
-
- (*sample_buffer)[(i*2)+0] = (int32_t)lrintf(inp0);
- (*sample_buffer)[(i*2)+1] = (int32_t)lrintf(inp0);
- }
- } else {
- ch = hDecoder->internal_channel[0];
- ch1 = hDecoder->internal_channel[1];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch ][i];
- real_t inp1 = input[ch1][i];
-
- inp0 *= 256.0f;
- inp1 *= 256.0f;
- CLIP(inp0, 8388607.0f, -8388608.0f);
- CLIP(inp1, 8388607.0f, -8388608.0f);
-
- (*sample_buffer)[(i*2)+0] = (int32_t)lrintf(inp0);
- (*sample_buffer)[(i*2)+1] = (int32_t)lrintf(inp1);
- }
- }
- break;
- default:
- for (ch = 0; ch < channels; ch++)
- {
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->internal_channel);
-
- inp *= 256.0f;
- CLIP(inp, 8388607.0f, -8388608.0f);
-
- (*sample_buffer)[(i*channels)+ch] = (int32_t)lrintf(inp);
- }
- }
- break;
- }
-}
-
-static void to_PCM_32bit(NeAACDecStruct *hDecoder, real_t **input,
- uint8_t channels, uint16_t frame_len,
- int32_t **sample_buffer)
-{
- uint8_t ch, ch1;
- uint16_t i;
-
- switch (CONV(channels,hDecoder->downMatrix))
- {
- case CONV(1,0):
- case CONV(1,1):
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = input[hDecoder->internal_channel[0]][i];
-
- inp *= 65536.0f;
- CLIP(inp, 2147483647.0f, -2147483648.0f);
-
- (*sample_buffer)[i] = (int32_t)lrintf(inp);
- }
- break;
- case CONV(2,0):
- if (hDecoder->upMatrix)
- {
- ch = hDecoder->internal_channel[0];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch][i];
-
- inp0 *= 65536.0f;
- CLIP(inp0, 2147483647.0f, -2147483648.0f);
-
- (*sample_buffer)[(i*2)+0] = (int32_t)lrintf(inp0);
- (*sample_buffer)[(i*2)+1] = (int32_t)lrintf(inp0);
- }
- } else {
- ch = hDecoder->internal_channel[0];
- ch1 = hDecoder->internal_channel[1];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch ][i];
- real_t inp1 = input[ch1][i];
-
- inp0 *= 65536.0f;
- inp1 *= 65536.0f;
- CLIP(inp0, 2147483647.0f, -2147483648.0f);
- CLIP(inp1, 2147483647.0f, -2147483648.0f);
-
- (*sample_buffer)[(i*2)+0] = (int32_t)lrintf(inp0);
- (*sample_buffer)[(i*2)+1] = (int32_t)lrintf(inp1);
- }
- }
- break;
- default:
- for (ch = 0; ch < channels; ch++)
- {
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->internal_channel);
-
- inp *= 65536.0f;
- CLIP(inp, 2147483647.0f, -2147483648.0f);
-
- (*sample_buffer)[(i*channels)+ch] = (int32_t)lrintf(inp);
- }
- }
- break;
- }
-}
-
-static void to_PCM_float(NeAACDecStruct *hDecoder, real_t **input,
- uint8_t channels, uint16_t frame_len,
- float32_t **sample_buffer)
-{
- uint8_t ch, ch1;
- uint16_t i;
-
- switch (CONV(channels,hDecoder->downMatrix))
- {
- case CONV(1,0):
- case CONV(1,1):
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = input[hDecoder->internal_channel[0]][i];
- (*sample_buffer)[i] = inp*FLOAT_SCALE;
- }
- break;
- case CONV(2,0):
- if (hDecoder->upMatrix)
- {
- ch = hDecoder->internal_channel[0];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch][i];
- (*sample_buffer)[(i*2)+0] = inp0*FLOAT_SCALE;
- (*sample_buffer)[(i*2)+1] = inp0*FLOAT_SCALE;
- }
- } else {
- ch = hDecoder->internal_channel[0];
- ch1 = hDecoder->internal_channel[1];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch ][i];
- real_t inp1 = input[ch1][i];
- (*sample_buffer)[(i*2)+0] = inp0*FLOAT_SCALE;
- (*sample_buffer)[(i*2)+1] = inp1*FLOAT_SCALE;
- }
- }
- break;
- default:
- for (ch = 0; ch < channels; ch++)
- {
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->internal_channel);
- (*sample_buffer)[(i*channels)+ch] = inp*FLOAT_SCALE;
- }
- }
- break;
- }
-}
-
-static void to_PCM_double(NeAACDecStruct *hDecoder, real_t **input,
- uint8_t channels, uint16_t frame_len,
- double **sample_buffer)
-{
- uint8_t ch, ch1;
- uint16_t i;
-
- switch (CONV(channels,hDecoder->downMatrix))
- {
- case CONV(1,0):
- case CONV(1,1):
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = input[hDecoder->internal_channel[0]][i];
- (*sample_buffer)[i] = (double)inp*FLOAT_SCALE;
- }
- break;
- case CONV(2,0):
- if (hDecoder->upMatrix)
- {
- ch = hDecoder->internal_channel[0];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch][i];
- (*sample_buffer)[(i*2)+0] = (double)inp0*FLOAT_SCALE;
- (*sample_buffer)[(i*2)+1] = (double)inp0*FLOAT_SCALE;
- }
- } else {
- ch = hDecoder->internal_channel[0];
- ch1 = hDecoder->internal_channel[1];
- for(i = 0; i < frame_len; i++)
- {
- real_t inp0 = input[ch ][i];
- real_t inp1 = input[ch1][i];
- (*sample_buffer)[(i*2)+0] = (double)inp0*FLOAT_SCALE;
- (*sample_buffer)[(i*2)+1] = (double)inp1*FLOAT_SCALE;
- }
- }
- break;
- default:
- for (ch = 0; ch < channels; ch++)
- {
- for(i = 0; i < frame_len; i++)
- {
- real_t inp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->internal_channel);
- (*sample_buffer)[(i*channels)+ch] = (double)inp*FLOAT_SCALE;
- }
- }
- break;
- }
-}
-
-void *output_to_PCM(NeAACDecStruct *hDecoder,
- real_t **input, void *sample_buffer, uint8_t channels,
- uint16_t frame_len, uint8_t format)
-{
- int16_t *short_sample_buffer = (int16_t*)sample_buffer;
- int32_t *int_sample_buffer = (int32_t*)sample_buffer;
- float32_t *float_sample_buffer = (float32_t*)sample_buffer;
- double *double_sample_buffer = (double*)sample_buffer;
-
-#ifdef PROFILE
- int64_t count = faad_get_ts();
-#endif
-
- /* Copy output to a standard PCM buffer */
- switch (format)
- {
- case FAAD_FMT_16BIT:
- to_PCM_16bit(hDecoder, input, channels, frame_len, &short_sample_buffer);
- break;
- case FAAD_FMT_24BIT:
- to_PCM_24bit(hDecoder, input, channels, frame_len, &int_sample_buffer);
- break;
- case FAAD_FMT_32BIT:
- to_PCM_32bit(hDecoder, input, channels, frame_len, &int_sample_buffer);
- break;
- case FAAD_FMT_FLOAT:
- to_PCM_float(hDecoder, input, channels, frame_len, &float_sample_buffer);
- break;
- case FAAD_FMT_DOUBLE:
- to_PCM_double(hDecoder, input, channels, frame_len, &double_sample_buffer);
- break;
- }
-
-#ifdef PROFILE
- count = faad_get_ts() - count;
- hDecoder->output_cycles += count;
-#endif
-
- return sample_buffer;
-}
-
-#else
-
-#define DM_MUL FRAC_CONST(0.3203772410170407) // 1/(1+sqrt(2) + 1/sqrt(2))
-#define RSQRT2 FRAC_CONST(0.7071067811865475244) // 1/sqrt(2)
-
-static INLINE real_t get_sample(real_t **input, uint8_t channel, uint16_t sample,
- uint8_t down_matrix, uint8_t up_matrix,
- uint8_t *internal_channel)
-{
- if (up_matrix == 1)
- return input[internal_channel[0]][sample];
-
- if (!down_matrix)
- return input[internal_channel[channel]][sample];
-
- if (channel == 0)
- {
- real_t C = MUL_F(input[internal_channel[0]][sample], RSQRT2);
- real_t L_S = MUL_F(input[internal_channel[3]][sample], RSQRT2);
- real_t cum = input[internal_channel[1]][sample] + C + L_S;
- return MUL_F(cum, DM_MUL);
- } else {
- real_t C = MUL_F(input[internal_channel[0]][sample], RSQRT2);
- real_t R_S = MUL_F(input[internal_channel[4]][sample], RSQRT2);
- real_t cum = input[internal_channel[2]][sample] + C + R_S;
- return MUL_F(cum, DM_MUL);
- }
-}
-
-void* output_to_PCM(NeAACDecStruct *hDecoder,
- real_t **input, void *sample_buffer, uint8_t channels,
- uint16_t frame_len, uint8_t format)
-{
- uint8_t ch;
- uint16_t i;
- int16_t *short_sample_buffer = (int16_t*)sample_buffer;
- int32_t *int_sample_buffer = (int32_t*)sample_buffer;
-
- /* Copy output to a standard PCM buffer */
- for (ch = 0; ch < channels; ch++)
- {
- switch (format)
- {
- case FAAD_FMT_16BIT:
- for(i = 0; i < frame_len; i++)
- {
- int32_t tmp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->upMatrix,
- hDecoder->internal_channel);
- if (tmp >= 0)
- {
- tmp += (1 << (REAL_BITS-1));
- if (tmp >= REAL_CONST(32767))
- {
- tmp = REAL_CONST(32767);
- }
- } else {
- tmp += -(1 << (REAL_BITS-1));
- if (tmp <= REAL_CONST(-32768))
- {
- tmp = REAL_CONST(-32768);
- }
- }
- tmp >>= REAL_BITS;
- short_sample_buffer[(i*channels)+ch] = (int16_t)tmp;
- }
- break;
- case FAAD_FMT_24BIT:
- for(i = 0; i < frame_len; i++)
- {
- int32_t tmp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->upMatrix,
- hDecoder->internal_channel);
- if (tmp >= 0)
- {
- tmp += (1 << (REAL_BITS-9));
- tmp >>= (REAL_BITS-8);
- if (tmp >= 8388607)
- {
- tmp = 8388607;
- }
- } else {
- tmp += -(1 << (REAL_BITS-9));
- tmp >>= (REAL_BITS-8);
- if (tmp <= -8388608)
- {
- tmp = -8388608;
- }
- }
- int_sample_buffer[(i*channels)+ch] = (int32_t)tmp;
- }
- break;
- case FAAD_FMT_32BIT:
- for(i = 0; i < frame_len; i++)
- {
- int32_t tmp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->upMatrix,
- hDecoder->internal_channel);
- if (tmp >= 0)
- {
- tmp += (1 << (16-REAL_BITS-1));
- tmp <<= (16-REAL_BITS);
- } else {
- tmp += -(1 << (16-REAL_BITS-1));
- tmp <<= (16-REAL_BITS);
- }
- int_sample_buffer[(i*channels)+ch] = (int32_t)tmp;
- }
- break;
- case FAAD_FMT_FIXED:
- for(i = 0; i < frame_len; i++)
- {
- real_t tmp = get_sample(input, ch, i, hDecoder->downMatrix, hDecoder->upMatrix,
- hDecoder->internal_channel);
- int_sample_buffer[(i*channels)+ch] = (int32_t)tmp;
- }
- break;
- }
- }
-
- return sample_buffer;
-}
-
-#endif
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